| Castarr4 |
If you gain the prereq for the feat back, then you get the benefit of the feat back. You don't actually lose the feat, you see... just the benefit.
You can even lose the benefits of feats that you qualify for without any special items. For instance, a fighter who takes enough Str drain to go below 13 Str will lose the benefit of Power Attack until he gets his Str back up. (Don't confuse this with Str damage or penalties. Drain actually lowers the stat while in effect)